Furnace.



J. A. LAZZELL.

FURNACE.

APPLICATION FILED 1uLIII3.I9Is.v

Patented Dec. 12, 1916.

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J. A. LAZZELL.

FURNACE.

APPLICATION mso xuLvls. |916.

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ment-@d Dec.12,'1916.

J. A. LAZZELL.

FURNACE. APPLICATION HLED1uLY1'3,I915.

Patented Dec. 12, 19,16.

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JAMES A. LAZZELL, OF COLUMBUS, INDIANA.

FURNACE.

Specication of Letters Patent.

Patented Dec. 12, 1916.

Application filed July 13, 1916. Serial No. 109,093.

T0 all fte/wm t may conce/Pn Be it known that I, JAMES A. LAZZELL, a citizen of the United States, residing at Columbus, in the county of Bartholomew and State of lndiana, have invented certain new and useful Improvements in Furnaces; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates. to improvements in furnaces and has for its principal object to provide a heater of this class so constructed as to permit shaking of the grate to be controlled from the iioor above.

lVith this general object in view, the invention resides in certain novel features of construction and in unique combinations of parts to be hereinafter fully described and claimed, the descriptive matter being supplemented by the accompanying drawings which constitute a part of this application and in which:

Figure 1 is a longitudinal section of a furnace embodying the invention; Fig. 2 is a vertical transverse section; Fig. 3 is a horizontal section taken above the grate; Fig. 4 is a bottom plan view of the grate remoyed; Fig. 5 is a front elevation of the lower end of the furnace.

In specifically describing the structure shown in the drawings above briefly described, similar characters will be employed to designate corresponding parts throughout the several views and reference will be herein made to the numerous elements by their respective indices. To this end, the numeral 1 designates a suitable shell or casing in the front of which the furnace proper' 2 is disposed, said shell and furnace resting on a suitable base 3 of cement or the like. The lower portion of the furnace 2 is provided with a suitable lining 4 of refractory material and is provided respectively above this lining and at the lower end thereof with passages 5 and 6. The passage 5 may be used when kindling a re in the furnace since at other times the fuel feeding means yet to be described is employed, and the passageway 6 is provided for the purpose of cleaning ashes from the furnace.

The passage 5 is closed by a hinged door 7 having a sliding draft 8 while a similar door 9 closes the passage 6 and is equipped with the usual vertically swinging draft door 10. 4

A short pipe section 12 leads rearwardly from the upper end of the furnace 2 and discharges into a heating drum 13, the lower end of this drum being provided with a 'clean out passage 14 which extends through the rear wall of the shell 1 and is provided with a door 15. A smoke pipe 16 rises from the passage 14 through the top of the shell 1 and discharges into a T 17, one end of the head of said 'l' being in communication with a chimney 18 while the other end thereof is equipped with a vertically swinging check damper 19 which may be operated by means of a cha-in 20 which rises through the floor 11 Loss of heat from the shell is prevented by lining the same with asbestos or the like as indicated at 21, and said heat may be distributed to the desired points by means of pipes 22 which lead from the upper end of the shell.

A grate 23 of novel construction is provided, said grate including a horizontal ring consisting of four cast sections 24 having straight downwardly extending flanges 25 on their inner edges, the ends of these flanges being secured to angle metal vertically disposed legs 26 by means of bolts 27, said legs resting on the base 3 as shown in Figs. the entire grate. A rectangular frame 28 is disposed within the ring above described and is formed of two right angular sections 29 detachably secured together at their -ends by bolts 29. The sides of the frame 28 near the front ends thereof are equipped with laterally extending ournals 30 which are received rotatably and removably in sockets 31 formed in two of the opposed sections 24. The rear end of frame 28 is prevented from tilting downwardly by means of stops 32 which underlie said frame, said stops being formed integrally with the 24. Due to the location of the journals 30, the frame 27 will normally remain in a horizontal position, but it may be tilted manually when desired.

Grate bars 33 are rockably mounted in the frame 28, being shown in the present embodiment of the invention as having journals 34 received in sockets 35 carried by the right angular sections 29 of said frame. Rigid arms 36 depend from the 1 and 2 and thus serving to support rearmost section grate bars 33 and are pivoted at their lower ends in a channel iron bar 37 which is disposed horizontally, the front end of said bar 37 having quick detachable connection with a horizontal rod 3,8 which is similarly connected with a crank arm 39 extending horizontally from an upright rock shaft 40, said shaft rising in front of the shell 1 through an opening in the floor 111 and being equipped on its upper end with an operat ing handle 41. It will fthus be observed that oscillation of the handle 41 will shake vthe grate `and -that it is .therefore unnecessary toenter the furnace room for this purpose.

'Ihe door 9 has `formed therein a notch 42 through which rod 38 passes. This permits opening of the door 9 for the purpose of re` moving ashes from :the ash pit beneath the grate 23 and also prevents accidental displacement of the Arod or link 88.

For supplying air to the interior of the shell to behea-ted and discharged through the 'pipes 22, any suitable pipe such as that shown at 43 .may be provided, and if this pipe fbeloeated as or substantially as shown, the upper end thereof will be equipped with a grating 44.

An inclined coal chute 45 extends through one side of the shell 1 and discharges into the furnace proper 2 above the grate 23, the outer end 'of said chute communicating with a suitable coal bunker or lhopper 46. Two sliding valves 47 and 48 operate vertically across chu-te 45 and are spaced apart longitudinally of said chute, the valve 47 moving upwardly while being opened, and 48 moving in the opposite direction. The valve 47 is Vmounted in suitable channel-shaped gu-ides 49 which are -secured to the outer side of and rise above the chute 45, the upper end of said valve being connected with an operating rod 50 which projects vthrough an opening in the floor 11. A pair of vertical tracks `51 are secured to and depend Yfrom opposite sides of Jthe chute 45, the longitudinal 'centers of said tracks being struck outwardly to provide external ribs 52 and internal grooves 53. The edges of the valve 48 are received slidably in the grooves 53 and sheet metal guide plates'54 are riveted or otherwise secured to said valve, said plates "being bent around the front edges of the tracks 51 and around the ribs 52 as depictedin Figs; 2 and 3.

TheV legs .of an arched frame 55' are secured in any suitable manner to the guide plates 54 and an operating rod 5G rises from said frame through the floor 11.

In addition to the features above described a suitable moisture pan 57 is employed, this pan being located within the shell and having an inlet normally closed by a hinged door 58 on the exterior of said shell.

Inoperation, after the lire has been started upon the grate 23, the numerous dampers and drafts may be controlled from the lloor above and shaking of the grate may be done when necessary. Furthermore, coal may be fed to the lire through the chute 45 without the necessity of entering the furnace room or basement. In so feeding this coal, the valve 48 will be opened, thus allowing a quantity of coal to pass down the chute 45 until it strikes the valve 47. 48 is now closed and 47 opened with the result that the coal trapped between the two valves will be discharged onto the lire. When it is required to dump the grate, the rod 3S will he disconnected therefrom, after which said grate may be tilted forwardly around its journals 30 in any suitable manner.

I claim:

The combination with a furnace having a passage leading into its ash pit and a horizontally swinging door for closing said passage, of a tilting frame in said furnace, a plurality of grate bars mounted rockably on said frame, a single reciprocating har for simultaneously rocking said grate bars, said reciprocating bar having in its front end an eye, a vertical rock shaft in front of the furnace and having an operating handle at its upper end, a horizontal crank arm on the lower end of said rock shaft extending to a point in advance of the aforesaid door and having in its free end an eye, and a onepiece horizontal link pivotally connected with one eye and having a downwardly bent end received removably in the other eye, said link passing through the aforesaid passage and the free edge of said door having a notch receiving said link therein to normally prevent the downwardly bent end thereof from disengaging its respective eye.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

J ARIES A. LAZZELL. Witnesses:

AUGUs'rUs II. IIAIsLnY, NAPOLEON B. BRANDENBURG.

lliopies of this patent may be obtainedv for five cents each, by addressing the "Commissioner of Patents, Washington, D. C. 

